Control your genitals

It's unevolved and lacking moral fibre. God is watching. I believe in monogamy. All that stuff makes me sick. But I'm glad they found someone who is equally sexually loose so they don't hurt other people with their lack of self control. There's more to life than sex. So much more.

It is wrong

Given enough time, polyamorous webs will always collapse.

Reason for this simple - there will always going to be situations where one has to choose between one or the other and whoever gets rejected will feel resentment, which will escalate at some point.

Imagine situation with ...Lets say one female is dating two males, everybody knows what's going on. Then, one day, both of the males happen to have some big happening of their lives scheduled at the same time and they both want to have this female to accompany them. It might be a family event, gradituation ceremony or whatever. The female has to make a decision, which will leave one of the guys with seriously hurt feelings, which will turn into resentment and eventually the scheme will collapse on itself.

Therefore the idea itself is flawed and flawed ideas are inherently bad.

My example was a small scale thing. Imagine the same situation with any larger web, and there will be bad-mouthing and hurt feelings. If one thinks that a collapse of a monogamous relationship can be messy, imagine the fallout when it is more than two people.

Tl;dr - poly relationships will face impossible scheduling problems, which will lead into feelings of rejection and resentment and eventually collapse.

It's Not Necessary.

Just because you love someone, and they happen to be the gender(s) you're attracted to, doesn't mean that you need to start a relationship with them. Having friendships can be just as fulfilling as relationships- sometimes, if not more so.

People are having more than enough struggles with relationships as is, especially young people. Treating polyamory as acceptable (or even superior to monogamous relationships) is only going to make it all even more complicated and confusing. Don't cheapen the value of having a partner by saying that you can have as many as you want.

Yes, polyamorous relationships are wrong.

All relationships are wrong. Humans should not interact with one another. Asking if polyamory is wrong is similar to asking if monogamy is wrong: should such relationships be allowed? The answer, of course, is no. As many of the other "yes" voters indicated, polyamorous relationships almost always end in someone getting hurt. This is no different from any other relationships. So, if people not getting hurt is the highest priority, then yes, all relationships are ethically wrong.

It just is

How can you be in a committed relationship with two or more people and NOT think it's wrong? One person is enough to love. Gay, bi, hetero, ply, pan, Demi, and all other sexualities are okay, but definitely NOT polyamory. Anyone who cannot see this is someone whom I cannot understand.

It's physically gross

Would you lick the creme center of an Oreo cookie after someone else licked it? If my partner came home after spending a night with their lover, the last thing I'd want to do is touch them or have them touch me after I knew they were doing things that they'd only do behind closed doors with me.

It is harmful to all individuals

In that kinda of relationship the chances for jealousy rise, even if you give each partner the same amount of time, or give them the same kind of attention or love that you offer, intimacy affects several people differently. Why tell a person that by doing this even if you both have equal partners that they are not worthy of all of you. Why do they not deserve all of your person. You can easily expand your experiences by doing a multitude of different things with one partner, having a relationship with multiple people is not expanding your experiences if anything it limits them by you having to worry about each individual relationship.

Yes, I believe that polyamory and polygamy are both wrong.

Both practices are archaic and have no place in modern society as they further sexualize us as a species. We are humans, the most civilized species on this planet, so why she we practice the same actions and traditions as lesser animals? Not to mention everyone in favor of open relationships is a filthy hippie.

Someone is harmed

Assuming that men & women do not practice it in equal numbers...Which is unlikely...This will throw off the balance of potential mates. Let's say there were 100 of each gender. If one man has 100 wives, 99 are left alone. If monogamy is practiced, each gets 1, which is fair. There is something seriously wrong with people who think only the most desirable people have the right to be loved.

Only with lack of communication

When it comes to any kind of relationship, communication is key. No matter how many partners you have, as long as all persons are consenting, it's a perfectly fine relationship. Why should anyone care about anyone else's relationships? As long as people are happy, shouldn't that be what really matters?

No, it's healthy as long as you communicate.

Many people are capable of caring deeply and intimately for more than one person at a time, despite what monogamous society would have us believe. When pressured to only have 1 partner, many people revert to lying, cheating, repressing emotions and a whole slew of other unhealthy and hurtful behaviors. If people were more comfortable with the idea of polyamory, then it would be easier for people to be honest about their feelings and create loving, healthy relationships.

New to polyamory

Being new to polyamory I saw nothing wrong with it prior to actually being in it, now that I'm actually in a polyamorous relationship just supports my prior feelings. I am a spiritual person and all those who feel it is wrong because of religious views, I disagree whole heartedly. God created everyone on this earth, no matter how people may say we twisted & manipulated His definition of love we haven't. Please don't use that as your reasoning for saying polyamory is wrong, & don't say that any of us are "going to hell" or don't believe in God because of what we're doing. Open your minds to more possibilities than what society & your upbringing has instilled in you.

Let people live

It's not cheating. It's a relationship with a different dynamic, but boundaries are still agreed upon. The relationship still needs trust. Just because it's different than the norm, doesn't mean it's wrong. If all people involved are happy & working towards bettering themselves & their relationship, then what's the big deal?

Yes, polyamorous relationships are wrong.

All relationships are wrong. Humans should not interact with one another. Asking if polyamory is wrong is similar to asking if monogamy is wrong: should such relationships be allowed? The answer, of course, is no. As many of the other "yes" voters indicated, polyamorous relationships almost always end in someone getting hurt. This is no different from any other relationships. So, if people not getting hurt is the highest priority, then yes, all relationships are ethically wrong.

How is it wrong?

I mean, im not polyamorous but and thats a big but that does not mean i am not supportive. We need to not be selfish and think about others.Okay??? I get jealous. Some dont. Deal with it guys. Seriously. Polyamory is not sick, gross or wrong. Seriously, please grow up.

Why is it wrong?

As long as the individuals involved in the relationship are consenting and are aware of the other partners, then what's the issue?Honestly, if you don't like the idea of polyamory, then YOU don't do it. Don't harass other people just because A. You don't understand. B. It's against your religion.

Look beyond what you've been taught to be "natural" or "normal".

If you truly love someone, you want them to feel free. You want to feel free. Putting limits on a relationships just is unrealistic (we naturally want to share our light with people we come across who speak to us) and stems from our own negative emotions we aren't taking responsibility for. It's okay to feel jealous, and insecure, but it is not your partners job to cut off other people because of it. Love isn't always sexual. It's in a gaze, a gesture, playfulness, deep communication, so many things that have nothing to do with simply getting off. I think a lot of people have that misconception, that once there are no limits it'll be a fuckfest. For some, maybe. But for me, it's about being myself and being honest with how that might naturally grow into something more. We should want to love as much as we can in life. It's ludacris to not in fear of someone else being upset about it - we should want our partners the happiest they can be.

Not in my eyes

Any intimate relationship between consenting adults is private business. I see no reason to stigmatize polyamory, it does not directly harm non-participants. The same argument can apply to homosexual behavior. Polyamorous relationships are capable of having the same values as monogamy, only polyamorists define these values in a different aspect.